Four Pack Dog Fence Batteries for Invisible Fence R21 or R51 Receiver Collars by Perimeter Technologies Deep Night Self winding movement

Self winding movement

Thumb tab allows you to easily adjust your fit

Distances: F/C/B to greens

and experience uncompromised wireless performance

High Speed

Four Pack Dog Fence Batteries for Invisible Fence R21 or R51 Receiver Collars by Perimeter Technologies Deep Night Self winding movementBrand: Perimeter Technologies Features: Pack of 4 batteries.; The Perimeter Brand Invisible Fence Replacement Battery is the best solution for keeping your Invisible Fence Brand system operating safely.; Compatible with R21, R22, or R51.; Less Expensive than the original. Publisher: Perimeter Technologies Details: batteries Package Dimensions: 3. 6 x 2. 3 x 1. 0 inches